Minda yehuswa hwekugadzira iri kuramba ichiwanda uye inoshandiswa mumitambo yezuva nezuva. Sisitimu yemitambo yehuswa hwekugadzira inosanganisira hwaro hwepasi, hwaro hwekutsvedzerera, uye hwaro hwehuswa. Hwaro hahusi humwe hwematanho akakosha pakuisa huswa hwekugadzira asiwo hunoshanda sehwaro hwemunda wese. Hunhu hwayo hunokanganisa zvakananga mashandiro uye hupenyu hwemunda. Nokudaro, zvakakosha kuisa pakutanga hwaro hweminda yehuswa hwekugadzira. Pasi apa pane sumo pfupi yemhando dzakasiyana dzehwaro dzinoshandiswa pari zvino muminda yemitambo yehuswa hwekugadzira.
1. Nheyo yeSimende yeKonkriti
Kusatsetseka: Kusatsetseka kwekupasa kunofanirwa kunge kuri pamusoro pe95%, nekukwanisa kushivirira kwe3mm parure remamita mashanu.
Materu: 3‰-4‰ pakati, ne dhizaini yemvura inoyerera neturtleback. 8‰ yemakombere, 5‰ yemastraight, uye 5‰ yenzvimbo dzine sedenderedzwa. Pamusoro payo panofanira kunge pakati sandara, pakanaka, uye pakachena mvura.
Simba uye Kugadzikana: Pamusoro penzvimbo panofanira kunge pakafanana uye pakasimba, pasina mitswe kana mipendero yakatyoka, ine majoini akatwasuka uye akatsetseka. Cheka kuita zvikamu zve 6m x 6m. Subgrade inofanira kuomeswa kusvika pahuwandu hunopfuura 95%. Mushure mekunge roller inorema yashandiswa, iva nechokwadi chekuti pamusoro payo hapana ivhu rakasununguka uye mavara emavhiri anoonekwa.
Nguva Yokugadzirisa: Nguva yekugadzirisa nheyo mazuva makumi maviri nerimwe.
Kuisa Nzvimbo: Kuti mugadzire uye muise mamaki nemazvo, shandisai mamaki akasimba uye akajeka kuti mumake mitsetse yese panzvimbo yacho.
2. Nheyo yeAsphalt
Kupfava: Kupfava kunofanira kunge kuri pamusoro pe95%, uye kutsungirira kwe3mm parure remamita matatu.
Kutsetseka: <1% yakatambarara, <1‰ yakatwasuka, uye <4‰ munzvimbo yekusvetuka-svetuka. Pamusoro payo panofanira kunge pakatwasuka uye pakanyatsotsvedzerera kuitira kuti mvura ibude.
Simba uye Kugadzikana: Zviri nani kuti zvinhu zveasphalt zvive zvisina wakisi kana kuti zvisina wakisi yakawanda. Nzvimbo yenheyo inofanira kunge yakamanikana zvakakwana kuti ive nechokwadi chekuti nzvimbo yacho yakatsetseka, isina matombo, isina mipendero yakaora, uye majoini akatsetseka uye akatsetseka.
Nguva Yokugadzirisa: Nguva yekugadzirisa nheyo mazuva makumi maviri nemasere. 3. 37 Nheyo yeLime-Soil
Kuenzana Kwezvinhu: Ivhu rinofanira kunge riri ivhu revhu rakatsetseka rine saizi yetsumbu isingapfuure 15mm, sulfate iri pasi pe 0.8%, uye organic matter iri pasi pe 10%. Shandisai hydrated lime powder yeGiredhi III. Mushure mekusarudza ivhu rakakodzera ne lime, itai bvunzo ye 3:7 lime-soil compaction test yega yega 5,000 m³ (heavy compaction) kuti ive nechokwadi chekuti kuvaka kwacho kwakarongeka.
Hunyoro: Kudzora hunyoro idanho rakakosha. Kazhinji zvinokurudzirwa kuchengetedza hunyoro huri pakati pe20% ne23%, husingapfuure 24%. Pamberi pekuvaka, zviyero zvakaita sehuwandu hwehunyoro hwevhu, ukobvu hwevhu re lime, uye hunyoro hwe tamping uye rolling zvinofanirwa kutariswa zvichibva pane hunhu hwepurojekiti, compaction factor yakagadzirwa, rudzi rwevhu, uye mamiriro ekuvaka.
Standard yeCompaction: Compaction Factor K ≥ 0.95
Nguva yekutumira: Gunyana-30-2025