{"product_id":"sand-gravel-20mm-ballast-mix-bulk-bag","title":"Sand\/Gravel 20mm Ballast Mix Bulk Bag","description":"\u003cdiv class=\"product-page__body__info-wrapper\"\u003e\n\u003cdiv class=\"text-block small-text color-light-gray\"\u003e\n\u003ch5\u003eProduct Description:\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003eOur 20mm Ballast is a pre-blended mix of sharp sand and 20mm gravel supplied in a bulk bag, ready to be combined with cement to make concrete. It is used for foundations and footings, shed and garage bases, concrete slabs, driveways and pathways, fence post setting, bedding kerbs and edgings, and general concreting across domestic and commercial projects.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eBallast takes the guesswork out of mixing concrete. Rather than buying sharp sand and aggregate separately and proportioning them on site, the two come ready blended in the correct ratio, so only cement and water need adding, and every batch comes out the same. The range of particle sizes is what gives concrete its strength: the gravel provides the bulk and the load-bearing structure, while the sand fills the spaces between the stones so the cured concrete is dense and solid rather than honeycombed with voids.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eFor most general concreting, a common mix is one part cement to five or six parts ballast, with a stronger one-to-four mix for structural work and foundations. Add clean water gradually and mix to a workable consistency, as excess water weakens the finished concrete considerably. Place and compact before it begins to set, and protect from frost and from drying too quickly in hot weather while it cures. Supplied in a bulk bag containing approximately 850kg, it is far more economical than handled bags for footings, bases, and anything beyond a small pour.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"accordion\" class=\"product-page__accordian\"\u003e\n\u003cdiv class=\"accordian-section product-page__accordian__section\" id=\"section_specs\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-10\"\u003e\n\u003ch5 class=\"mt-0 mb-0\"\u003eSpecification:\u003cbutton type=\"button\" class=\"btn btn-link lnkChangeSection\"\u003e\u003c\/button\u003e\n\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"collapse_specs\" class=\"collapse show\"\u003e\n\u003cdiv class=\"product-page__spec-table-wrapper\"\u003e\n\u003ctable class=\"product-page__spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Home \u0026 Trade","offers":[{"title":"Default Title","offer_id":55403666112839,"sku":"AGG4","price":48.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1016\/7759\/6999\/files\/Sand_Gravel_20mm_Ballast_Mix_Bulk_Bag.jpg?v=1791879101","url":"https:\/\/homeandtrade.co.uk\/products\/sand-gravel-20mm-ballast-mix-bulk-bag","provider":"Home \u0026 Trade","version":"1.0","type":"link"}